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X-RAY RUNS: Apply for Beamtime

2017  Nov 1 - Dec 21

2018  Feb 7 - Apr 3
2018  Proposal/BTR deadline: 12/1/17

2018  Apr 11 - Jun 4
2018  Proposal/BTR deadline: 2/1/18

Scientists from many disciplines come together at CHESS to do work in environmental and geological sciences. Whether detecting toxic and other harmful elements in local marine-life or performing trace element analysis of dendrochronologically-dated tree rings, researchers collaborate with CHESS staff scientists to investigate problems that affect our local and global environment. Additionally, CHESS is equipped with facilities to create high temperature and pressure environments, similar those present at the center of the earth, which can be applied to study for instance solid, metallic oxygen. Imaging capabilities have also opened the door for studying the durability of materials such as geotextiles, porous fabric used to control erosion.

X-ray techniques are very useful tools to help environmental scientists learn about and map elemental composition, distinguish between multiple chemical states, and characterize high-resolution atomic and molecular structures. Most x-ray studies can be done without having to alter or destroy specimens; data can be collected even on live plants. With spatial resolution as small as 20 microns, scientists employ a variety of techniques: x-ray absorption studies (XAS), x-ray fluorescence analysis (XRF), radiography and computed tomography (CT), and high-energy or high-resolution x-ray diffraction (XRD).

XRF image of heron feather

New fluorescence detector imaging... more »

fish otoliths

In search of the dead zone... more »

XRF image of shrimp

Workshop draws full house... more »

XRF map of breccia

Planetary geologists find answers at CHESS... more »